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The AZ9003320309 Single-Row Cylindrical Roller Bearing is a precision-engineered, high-capacity rolling element bearing designed for critical rotating applications in SINOTRUK Howo transmissions, differentials, and other driveline assemblies. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM-grade cylindrical roller bearing as a direct replacement for the original factory component.
The AZ9003320309 bearing delivers exceptional radial load capacity, high-speed capability, and reliable performance under the extreme torque and temperature conditions typical of heavy-duty truck drivetrains.
Manufactured from high-quality bearing steel (GCr15) with precision-ground raceways, controlled roller geometry, and a robust cage design, this bearing reduces friction, minimizes heat generation, and ensures smooth, dependable rotation throughout its service life.
The AZ9003320309 single-row cylindrical roller bearing is essential for maintaining proper shaft support, rotational accuracy, and load distribution in your HOWO truck’s driveline. A worn or damaged bearing can lead to increased noise, vibration, shaft misalignment, and catastrophic component failure.
This genuine OEM bearing restores precise rotational performance and ensures your truck operates reliably and efficiently.
OEM direct replacement • High-quality bearing steel • Precision-ground raceways • Single-row design • High radial load capacity
The AZ9003320309 is a single-row cylindrical roller bearing designed for use in SINOTRUK Howo transmissions, differentials, and other driveline components where high radial loads and moderate speeds are encountered.
Its OEM-grade construction precisely matches the original bearing’s dimensions, load ratings, and operating characteristics, ensuring perfect fitment and reliable performance.
The bearing consists of an inner ring, an outer ring, and a full complement of precision-ground cylindrical rollers guided by a robust cage. The single-row design allows the bearing to accommodate high radial loads while permitting limited axial displacement.
The raceways are precision-ground to achieve a superior surface finish and geometric accuracy, minimizing friction and ensuring smooth rotation at high speeds.
The AZ9003320309 bearing is manufactured from high-carbon chromium bearing steel (GCr15) with a uniform hardness of HRC 60-65 across all rolling elements and raceways.
The rollers are precision-ground and graded for consistent size, roundness, and surface finish. The cage is typically made of stamped steel or brass, providing excellent strength, wear resistance, and the ability to withstand high operating temperatures.
The bearing is also treated with a corrosion-resistant coating to protect against moisture and contamination.
Common symptoms of a failing bearing include excessive noise (whining, rumbling, or grinding), increased vibration, elevated operating temperatures, and visible wear on the rolling elements or raceways.
Replacing a worn bearing with the AZ9003320309 restores smooth, quiet operation and protects the driveline from further damage. Whether you’re performing a major transmission overhaul or replacing a failed bearing, this bearing offers the quality, precision, and durability that SINOTRUK Howo professionals demand.
The AZ9003320309 bearing is specifically designed for SINOTRUK Howo A7 and T7H series transmissions, differentials, and other driveline components requiring a 45x100x25mm single-row cylindrical roller bearing.
It serves as a direct replacement for the original bearing and is compatible with a wide range of transmission models, including the 12JSD and 16JSD series gearboxes used in HOWO heavy-duty trucks.
This bearing is typically used to support shafts in gearboxes, differentials, and transfer cases where high radial loads and moderate speeds are encountered.
Its 45mm inner diameter and 100mm outer diameter make it suitable for medium-to-large shaft applications, while the 25mm width provides adequate load-carrying capacity for heavy-duty operation.
When replacing a bearing, it is critical to inspect the shaft and housing for wear or damage. The AZ9003320309 is designed to match the factory specifications, including the precise inner and outer diameter tolerances required for proper interference and clearance fits.
For fleets with multiple HOWO trucks equipped with similar driveline components, this bearing standardizes repairs, simplifying inventory and ensuring the correct part is available for scheduled maintenance or emergency repairs. Always verify the bearing location and shaft size on your specific transmission, though the AZ9003320309 is the standard bearing for numerous A7 and T7H driveline applications.
Replacing the AZ9003320309 bearing requires careful attention to cleanliness, alignment, and proper installation techniques.
This work should be performed by a qualified technician with the appropriate bearing installation tools, such as bearing heaters, induction heaters, and hydraulic or mechanical press equipment.
Begin by disassembling the transmission or component to access the bearing location. Carefully remove the old bearing using a suitable puller or press, ensuring that the shaft and housing are not damaged.
Clean the shaft and housing thoroughly with a solvent and lint-free cloth, removing all old lubricant, debris, and burrs.
Inspect the shaft for wear, scoring, or out-of-roundness. If the shaft is damaged, it must be replaced or repaired before installing the new bearing.
The AZ9003320309 should be installed with the correct fit – typically an interference fit on the inner ring and a clearance or light interference fit on the outer ring, depending on the application.
Heat the bearing or cool the shaft as needed to facilitate installation. Slide the bearing onto the shaft (or into the housing) using a press with the appropriate tools, ensuring that the bearing is fully seated against the shoulder.
Never hammer directly on the bearing rings, as this can cause brinelling or distortion. Lubricate the bearing with the recommended transmission or gear oil before reassembly.
For maintenance, regular transmission fluid changes at manufacturer-recommended intervals help protect the bearing from contamination and wear. Monitor for unusual noise or vibration, which may indicate bearing wear.
The AZ9003320309 is designed for long service life, but proper lubrication and early detection of issues are key to preventing major driveline damage.
The AZ9003320309 bearing is manufactured in an ISO 9001-certified facility using advanced grinding, honing, and assembly processes.
The GCr15 bearing steel is sourced from certified mills and undergoes rigorous chemical analysis and purity testing to ensure it meets the specification for high-performance bearing applications.
Every bearing undergoes comprehensive quality checks, including dimensional verification of all critical dimensions (inner diameter, outer diameter, and width), raceway roundness and surface finish measurement, and roller geometry inspection.
Hardness testing is performed on both the rings and the rollers to ensure a consistent HRC 60-65 range. The cage is inspected for dimensional accuracy and strength.
Random samples from each batch are subjected to life testing, load rating verification, and dynamic performance testing to confirm the bearing meets the specified load and speed capabilities.
We back the AZ9003320309 with a comprehensive warranty against material and workmanship defects. Our rigorous quality control ensures that every bearing delivers the same fit, performance, and durability as the original factory part, giving you confidence in your driveline’s integrity. Choose genuine quality for your driveline repair – choose the AZ9003320309 Single-Row Cylindrical Roller Bearing.
The AZ9003320309 cylindrical roller bearing is a fundamental component that directly impacts the rotational accuracy, noise level, and durability of your HOWO truck’s transmission and driveline.
A worn or failed bearing can cause shaft misalignment, increased vibration, gear tooth damage, and eventual driveline failure. By replacing a worn bearing with this genuine OEM component, you restore precision rotational support and protect the entire driveline.
The AZ9003320309 is manufactured from premium GCr15 bearing steel with precision-ground raceways and rollers, delivering exceptional radial load capacity and high-speed capability.
Its single-row design provides the flexibility to accommodate both radial loads and limited axial displacement, making it suitable for a wide range of driveline applications.
Fleet operators will enjoy reduced driveline maintenance, fewer unscheduled breakdowns, and lower overall repair costs. Owner-operators will have peace of mind knowing their truck’s driveline is supported by a component that meets OEM specifications and is backed by a comprehensive warranty.
Invest in the AZ9003320309 Single-Row Cylindrical Roller Bearing and ensure your SINOTRUK Howo’s driveline delivers the smooth, quiet, and reliable performance you expect. Its superior materials, precision engineering, and proven durability make it the smart choice for professionals who demand the best for their vehicles.
Order your AZ9003320309 today and keep your HOWO truck’s driveline rotating smoothly and reliably for miles to come.
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